onset prior to age 4
poor prognosis, seizures into adulthood
slow spike and wave activity on EEG
treat with valproci acid, topiramate
may be refractory to treatment

Lennox-Gastaut epilepsy

onset before age 7
progressive decline in language skills
simple partial or generalized tonic-clonic seizures
behavioral problems
diffuse or multifocal spike and waves most prominent in anteroir/midtemporal regions on EEG
treat with valproic acid, language may not recover with treatment

Landau-Kleffner epilepsy

onset school age
seizures abate by puberty
focal onset, often involving the face
often occur at night
sharp, slow discharges localized to rolandic regions on EEG
treat with carbamazepine or nothing